CN108007911A - A kind of detecting system and detection method for separately measuring mercury and cadmium - Google Patents
A kind of detecting system and detection method for separately measuring mercury and cadmium Download PDFInfo
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- CN108007911A CN108007911A CN201711484871.5A CN201711484871A CN108007911A CN 108007911 A CN108007911 A CN 108007911A CN 201711484871 A CN201711484871 A CN 201711484871A CN 108007911 A CN108007911 A CN 108007911A
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- Prior art keywords
- mercury
- cadmium
- gas circuit
- component
- gas
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- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 84
- 229910052793 cadmium Inorganic materials 0.000 title claims abstract description 74
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 238000002347 injection Methods 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 239000003054 catalyst Substances 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 79
- 238000009413 insulation Methods 0.000 claims description 22
- 239000012159 carrier gas Substances 0.000 claims description 18
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 12
- 229910052737 gold Inorganic materials 0.000 claims description 12
- 239000010931 gold Substances 0.000 claims description 12
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 12
- 229910052721 tungsten Inorganic materials 0.000 claims description 12
- 239000010937 tungsten Substances 0.000 claims description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 230000003197 catalytic effect Effects 0.000 claims description 6
- 239000008246 gaseous mixture Substances 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 6
- 229910000497 Amalgam Inorganic materials 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000005416 organic matter Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 1
- 229910052729 chemical element Inorganic materials 0.000 abstract description 2
- 238000012216 screening Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 229910000645 Hg alloy Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- MJGFBOZCAJSGQW-UHFFFAOYSA-N mercury sodium Chemical compound [Na].[Hg] MJGFBOZCAJSGQW-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910001023 sodium amalgam Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6402—Atomic fluorescence; Laser induced fluorescence
- G01N21/6404—Atomic fluorescence
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/3103—Atomic absorption analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Optics & Photonics (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The present invention relates to analysis of chemical elements field, disclose a kind of detecting system for separately measuring mercury and cadmium, it includes auto injection component, arranged on auto injection component side and be sequentially communicated heating furnace, insulating box and catch mercury component；Cadmium component is caught with respect to opposite side arranged on auto injection component, catches cadmium component in high temperature cavity；Gas cylinder is connected by the first gas circuit with high temperature cavity, is connected to insulating box by the second gas circuit and is caught the 3rd gas circuit between mercury component；Bypass gas circuit is also associated with 3rd gas circuit；Catch mercury component by the 4th gas circuit, catch cadmium component detecting instrument be connected to by the 5th gas circuit, be respectively used to detection mercury and cadmium content；Heating furnace is externally connected with air pump, and catalyst is equipped with insulating box；Control valve is equipped with first gas circuit, the second gas circuit, the 3rd gas circuit, the 4th gas circuit, the 5th gas circuit and bypass gas circuit.The invention also discloses a kind of detection method.What the present invention can realize mercury and cadmium exempts to clear up quick detection, easy to operate.
Description
Technical field
The present invention relates to analysis of chemical elements technical field, more particularly to one kind can direct injected and separately measure mercury and
The detecting system and detection method of cadmium.
Background technology
Cadmium and mercury in the agricultural product such as China's grain, vegetables, tealeaves, pluck, fish and shellfish and some areas soil
Pollution problem is very prominent, current most of heavy metal detection method is required for being pulverized, ground, weighed after sampling,
The pre-treatments such as resolution operation, machine testing is gone up by sample preparation again into liquid, cumbersome, very time-consuming, and to operating personnel
Specialty chemical context request is higher, it is difficult to meet the requirement that at the scene a large amount of samples are carried out with rapid screening.
The content of the invention
(1) technical problems to be solved
The technical problem to be solved in the present invention is how the content of cadmium and mercury in direct injected and quick determination sample.
(2) technical solution
In order to solve the above-mentioned technical problem, the embodiment of the present invention provides a kind of detecting system for separately measuring mercury and cadmium, its
Including：
Auto injection component, for sample to be tested to be sent into designated position；
Arranged on the auto injection component side and be sequentially communicated heating furnace, insulating box and catch mercury component；
Cadmium component is caught with respect to opposite side arranged on the auto injection component, the cadmium component of catching is installed on high temperature cavity
In；
There is the gas cylinder of protection gas, connected by the first gas circuit with the high temperature cavity, institute is connected to by the second gas circuit
State insulating box and catch the 3rd gas circuit between mercury component；
Bypass gas circuit is also associated with 3rd gas circuit；
The mercury component of catching is connected to detecting instrument by the 4th gas circuit, the cadmium component of catching by the 5th gas circuit, respectively
For detecting the mercury content and cadmium content of capture；
The heating furnace is externally connected with air pump, and catalyst is equipped with the insulating box；
Control is equipped with first gas circuit, the second gas circuit, the 3rd gas circuit, the 4th gas circuit, the 5th gas circuit and bypass gas circuit
Valve processed.
Wherein, the insulating box include shell, liner and temperature sensor in shell, the temperature sensor with
Temperature control system connects, and carries out closed-loop control to insulating box internal temperature by the temperature control system, conjunction is provided for the catalyst
Suitable catalytic temperature, the catalytic temperature control is at 550~600 degree.
Wherein, the mercury component of catching includes cavity and the horizontal insulation tube being arranged in the cavity, is put in the insulation tube
Spun gold is put, for capturing mercury；Heater strip is wound with outside the insulation tube, for being heated to spun gold, makes the mercury of its release capture.
Wherein, the port of export of the 3rd gas circuit is docked and connected with the input end of the insulation tube, the insulation tube
The port of export is docked and connected with the input end of the 4th gas circuit；
The spun gold is arranged to match netted of the internal diameter of the insulation tube or in multiple along insulation tube length direction
The strip of extension.
Wherein, the cadmium component of catching includes tungsten filament, electrode and insulating base, and the insulating base is installed in the high temperature cavity
Top, the tungsten filament is around being located on the insulating base, and the both ends of the tungsten filament connect the electrode respectively, for leading to tungsten filament
Electrical heating.
Wherein, the argon hydrogen gaseous mixture for the percent by volume that the protection gas is 5%~9%.
Wherein, the heating furnace is quartzy stove；
The detecting instrument is one in atomic fluorescence spectrophotometer, atomic absorption spectrophotometer and Atomic Emission Spectrometer AES
Kind；
Heating and temperature control in the high temperature cavity is at 1000~1500 degree.
Wherein, the auto injection component is auto injection motor, and the opposite sides of the auto injection motor is set respectively
There is sample introduction end, one of them described sample introduction end is corresponding with the import of the heating furnace, another described sample introduction end and the high temperature
The import of cavity corresponds to, and two sample introduction ends are connected by passage；The sample introduction end is respectively equipped with automatic clamp.
Wherein, the sample introduction end is arranged to the mechanical arm that can be raised or reduce, and is configured with the mechanical arm described in being formed
The groove of passage.
The embodiment of the present invention also provides a kind of detection for using detecting system described above separate measure mercury and cadmium
Method, when surveying mercury, is heated to design temperature by sample to be tested feeding heating furnace by auto injection component, makes in sample to be tested
Mercury separates out, and part chaff interferent is also gradually decomposed and separated out at this time, and carrier gas is provided by mercury and chaff interferent carrier band by permanent by air pump
Catalyst in incubator, part chaff interferent are further divided and absorb under the action of catalyst, then by catching mercury component,
Mercury forms amalgam in mercury component is caught and is captured, and chaff interferent takes away discharge by carrier gas, realizes the separation of mercury and chaff interferent；Then
Mercury component is caught in the atmosphere of protection gas and is heated and discharges mercury again, is carried as carrier gas by protection gas and is examined into detecting instrument
Survey；
When surveying cadmium, sample to be tested feeding heating furnace is heated to design temperature by auto injection component, test sample is treated in removing
Moisture and organic matter in product；Then sample to be tested is transferred into high temperature cavity again, to sample to be tested under the action of gas is protected
Further heated, separate out cadmium, also had chaff interferent at this time and decompose precipitation, cadmium and interference are carried as carrier gas by protection gas
By catching cadmium component, cadmium is absorbed thing, and chaff interferent takes away discharge by carrier gas, realizes the separation of cadmium and chaff interferent；Then protecting
Catch cadmium component heating in the atmosphere of gas to discharge cadmium, bringing detecting instrument into by carrier gas is detected.
(3) beneficial effect
Compared with prior art, the present invention has the following advantages：
A kind of detecting system and detection method for separately measuring mercury and cadmium provided by the invention, utilizes separated measure mercury and cadmium
Detecting system easily mercury in sample and cadmium content can be measured respectively, realize mercury and cadmium exempts to clear up quick detection,
It is easy to operate, live rapid screening can be carried out to a large amount of samples, improve work efficiency, reduce labor intensity.
Brief description of the drawings
Fig. 1 is a kind of connection block diagram for the detecting system for separately measuring mercury and cadmium of the embodiment of the present invention；
In figure：1：Auto injection component；2：Gas cylinder；3：Air pump；4、5、6、7、8、9：Control valve；10：High temperature cavity；
11：Heating furnace；12：Insulating box；13：Catch mercury component；14：Detecting instrument；15：Catch cadmium component.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
In the description of the present invention, it is necessary to explanation, term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or dark
Show that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, thus it is it is not intended that right
The limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. be only used for description purpose, and it is not intended that instruction or
Imply relative importance.
In the description of the present invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, concrete condition can be regarded and understands that above-mentioned term exists
Concrete meaning in the present invention.
An embodiment of the present invention provides a kind of detecting system for separately measuring mercury and cadmium, as shown in Figure 1, implementing for the present invention
A kind of connection block diagram for the detecting system for separately measuring mercury and cadmium of example, it mainly includes：
Auto injection component 1, for sample to be tested to be sent into designated position, facilitates sample introduction, sample to be tested can be dish leaf,
The sample of the needs such as soil detection；
Arranged on 1 side of auto injection component and pass sequentially through the heating furnace 11 of gas circuit connection, insulating box 12 and catch mercury
Component 13；
Cadmium component 15 is caught with respect to opposite side arranged on the auto injection component 1, the cadmium component 15 of catching is installed on high temperature
In cavity 10；
Mercury will be caught and catch cadmium and be divided into two branches and be measured respectively, do not interfere with each other, be independent of each other, and disclosure satisfy that and only need
Measure the occasion of mercury content or cadmium content；
There is the gas cylinder 2 of protection gas, connected with the high temperature cavity 10 by the first gas circuit, be connected to by the second gas circuit
The insulating box 12 and catch the 3rd gas circuit between mercury component 13；
In the embodiment of the present invention, protection gas is mainly argon hydrogen gaseous mixture；
Bypass gas circuit is also associated with 3rd gas circuit；
The mercury component 13 of catching is connected to detecting instrument by the 4th gas circuit, the cadmium component 15 of catching by the 5th gas circuit
14, it is respectively used to the mercury content and cadmium content of detection capture；
The heating furnace 11 is externally connected with air pump 3, for providing air-source, provides carrier gas when needed for gas circuit, institute
State and catalyst is equipped with insulating box 12, it is decomposed and is absorbed for being catalyzed some chaff interferents；
Correspondence is set in first gas circuit, the second gas circuit, the 3rd gas circuit, the 4th gas circuit, the 5th gas circuit and bypass gas circuit
There is control valve 4,5,6,7,8,9, different gas circuit control is carried out by controlling different control valves to be opened and closed.
Specifically, the insulating box 12 includes shell, liner and temperature sensor in shell, the temperature sensing
Device is connected with temperature control system, is carried out closed-loop control to 12 internal temperature of insulating box by the temperature control system, is the catalyst
Suitable catalytic temperature is provided, the catalytic temperature can be specifically controlled at 550~600 degree.
In the embodiment of the present invention, the mercury component 13 of catching includes cavity and the horizontal insulation tube being arranged in the cavity,
Spun gold (can also be other precious metals) is placed in the insulation tube, for capturing mercury；Heating is wound with outside the insulation tube
Silk, for being heated to spun gold, makes the mercury of its release capture.
In the embodiment of the present invention, the port of export of the 3rd gas circuit is docked and connected with the input end of the insulation tube,
The port of export of the insulation tube is docked and connected with the input end of the 4th gas circuit, to ensure that the gas Jing Guo the 3rd gas circuit is complete
Enter entirely in insulation tube；
The spun gold can be arranged to match netted of the internal diameter of the insulation tube or in multiple along the length of tube that insulate
The strip of direction extension, to increase the contact area of spun gold and mercury as much as possible, in order to complete mercury in the as far as possible short time
Capture.
In the embodiment of the present invention, the cadmium component 15 of catching can include tungsten filament, electrode and insulating base, the insulating base peace
Top in the high temperature cavity 10, around being located on the insulating base, the both ends of the tungsten filament connect the tungsten filament respectively
The electrode, for giving tungsten filament electrified regulation.
Wherein, the protection gas is specially the argon hydrogen gaseous mixture of 5%~9% percent by volume.
Wherein, the heating furnace 11 is preferably quartzy stove；
The detecting instrument 14 can be atomic fluorescence spectrophotometer, atomic absorption spectrophotometer and Atomic Emission Spectrometer AES
In one kind；
Heating-up temperature in the high temperature cavity 10 is preferably controlled in 1000~1500 degree.
In the embodiment of the present invention, the auto injection component 1 specially auto injection motor, the auto injection motor
Opposite sides be respectively equipped with sample introduction end, one of them described sample introduction end is corresponding with the import of the heating furnace 11, another institute
The import that sample introduction end is stated with the high temperature cavity 10 is corresponding, and two sample introduction ends are connected by passage, it is convenient by one into
The sample at sample end is transferred to another sample introduction end；The sample introduction end is respectively equipped with automatic clamp, convenient to be sent into sample accordingly
In chamber.
Wherein, the sample introduction end is arranged to the mechanical arm that can be raised or reduce, and is configured with the mechanical arm described in being formed
The groove of passage, is raised by the mechanical arm of side, and the mechanical arm of opposite side reduces, and can be transported to from side sample another
Side, without man-handling of materials.
The embodiment of the present invention additionally provides a kind of inspection for using detecting system described above separate measure mercury and cadmium
Survey method, when surveying mercury, heating furnace 11 is sent sample to be tested into by auto injection component 1, and injection port is sealed, and opens control
Valve 7 and 8, remaining control valve are closed, then open the offer of air pump 3 air stream and gas circuit is purged, and heating furnace 11 is heated to set
Constant temperature degree, separates out the mercury in sample to be tested, also has some chaff interferents gradually to decompose precipitation at this time, and sky is provided by air pump 3
Air-flow carrier gas by mercury and chaff interferent carrier band pass through insulating box 12 in catalyst, part chaff interferent under the action of catalyst by into
One step is decomposed and absorbed, and then by catching mercury component 13, mercury forms amalgam in mercury component 13 is caught and is captured, and chaff interferent is empty
Discharge is taken away in air-flow carrier gas, realizes the separation of mercury and chaff interferent, closes air pump 3, opens control valve 5 and 7, remaining control valve closes
Close, using argon hydrogen gaseous mixture as protection air-blowing scavenging road, chaff interferent is discharged as far as possible；Then mercury is caught in the atmosphere of protection gas
Component 13 heats discharges mercury again, is detected by protection gas as carrier gas carrier band mercury into detecting instrument 14；
Mercury has a kind of unique property, it can dissolve various metals (such as gold, silver, potassium, sodium, zinc), after dissolving just
The alloy of mercury and these metals is constituted, is referred to as amalgam, such as gold amalgam, sodium amalgam；
When surveying cadmium, sample to be tested is sent into heating furnace 11 by auto injection component 1, and injection port is sealed, opens control
Valve 8 and 9 processed, remaining control valve are closed, then open the offer of air pump 3 air stream and gas circuit is purged, and heating furnace 11 is heated to
Design temperature, removes moisture and organic matter in sample to be tested, is then shut off air pump 3 and all control valves；Then will treat again
Sample is transferred into high temperature cavity 10, and the injection port of high temperature cavity 10 is sealed, and is opened control valve 4 and 6, is closed remaining control
Valve, by the use of argon hydrogen gaseous mixture as protection air-blowing scavenging road, discharges the air inside gas circuit and high temperature cavity 10, in the work of protection gas
Sample to be tested is further heated with lower, separates out cadmium, chaff interferent is also had at this time and decomposes precipitation, by protection gas as load
Airborne band cadmium and chaff interferent are by catching cadmium component 15, and cadmium is absorbed, and chaff interferent takes away discharge by carrier gas, realize cadmium and chaff interferent
Separation；Then catch cadmium component 15 in the atmosphere of protection gas and heat and discharge cadmium, carried into detecting instrument 14 and carried out by carrier gas
Detection.
As can be seen from the above embodiments, what the present invention can realize mercury and cadmium exempts to clear up quick detection, easy to operate, can
Scene carries out rapid screening to a large amount of samples, improves work efficiency, reduces labor intensity.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention god.
Claims (10)
- A kind of 1. detecting system for separately measuring mercury and cadmium, it is characterised in that including：Auto injection component, for sample to be tested to be sent into designated position；Arranged on the auto injection component side and be sequentially communicated heating furnace, insulating box and catch mercury component；Arranged on catch cadmium component of the auto injection component with respect to opposite side, the cadmium component of catching is in high temperature cavity；There is the gas cylinder of protection gas, connected by the first gas circuit with the high temperature cavity, the perseverance is connected to by the second gas circuit Incubator and catch the 3rd gas circuit between mercury component；Bypass gas circuit is also associated with 3rd gas circuit；The mercury component of catching is connected to detecting instrument by the 4th gas circuit, the cadmium component of catching by the 5th gas circuit, is respectively used to Detect the mercury content and cadmium content of capture；The heating furnace is externally connected with air pump, and catalyst is equipped with the insulating box；Control valve is equipped with first gas circuit, the second gas circuit, the 3rd gas circuit, the 4th gas circuit, the 5th gas circuit and bypass gas circuit.
- 2. the detecting system according to claim 1 for separately measuring mercury and cadmium, it is characterised in that the insulating box includes outer Shell, liner and temperature sensor in shell, the temperature sensor are connected with temperature control system, pass through the temperature control system Closed-loop control is carried out to insulating box internal temperature, suitable catalytic temperature, the catalytic temperature control are provided for the catalyst At 550~600 degree.
- 3. the detecting system according to claim 1 for separately measuring mercury and cadmium, it is characterised in that the mercury component of catching includes Cavity and the horizontal insulation tube being arranged in the cavity, the insulation tube is interior to place spun gold, for capturing mercury；Outside the insulation tube Heater strip is wound with, for being heated to spun gold, makes the mercury of its release capture.
- 4. the detecting system according to claim 3 for separately measuring mercury and cadmium, it is characterised in that the 3rd gas circuit goes out Mouth end is docked and is connected with the input end of the insulation tube, the port of export of the insulation tube and the input end pair of the 4th gas circuit Connect and connect；The spun gold is arranged to along insulation tube length direction extend with match netted of the internal diameter of the insulation tube or in multiple Strip.
- 5. the detecting system according to claim 1 for separately measuring mercury and cadmium, it is characterised in that the cadmium component of catching includes Tungsten filament, electrode and insulating base, the insulating base are installed on the top in the high temperature cavity, and the tungsten filament is around being located at the insulation On seat, the both ends of the tungsten filament connect the electrode respectively, for giving tungsten filament electrified regulation.
- 6. the detecting system according to claim 1 for separately measuring mercury and cadmium, it is characterised in that the protection gas is 5% The argon hydrogen gaseous mixture of~9% percent by volume.
- 7. the detecting system according to claim 1 for separately measuring mercury and cadmium, it is characterised in that the heating furnace is quartz Stove；The detecting instrument is one kind in atomic fluorescence spectrophotometer, atomic absorption spectrophotometer and Atomic Emission Spectrometer AES；Heating and temperature control in the high temperature cavity is at 1000~1500 degree.
- 8. the detecting system according to claim 1 for separately measuring mercury and cadmium, it is characterised in that the auto injection component For auto injection motor, the opposite sides of the auto injection motor is respectively equipped with sample introduction end, one of them described sample introduction end with The import of the heating furnace corresponds to, another described sample introduction end is corresponding with the import of the high temperature cavity, and two sample introductions End is connected by passage；The sample introduction end is respectively equipped with automatic clamp.
- 9. the detecting system according to claim 8 for separately measuring mercury and cadmium, it is characterised in that the sample introduction end is arranged to The mechanical arm that can be raised or reduce, is configured with the groove to form the passage on the mechanical arm.
- 10. a kind of detection method for using such as claim 1-9 any one of them detecting system separate measure mercury and cadmium, It is characterized in that, when surveying mercury, sample to be tested feeding heating furnace is heated to design temperature by auto injection component, makes to treat test sample Mercury in product separates out, and part chaff interferent is also gradually decomposed and separated out at this time, and providing carrier gas by air pump carries mercury and chaff interferent By the catalyst in insulating box, part chaff interferent is further divided and absorbs under the action of catalyst, then by catching Mercury component, mercury form amalgam in mercury component is caught and are captured, and chaff interferent takes away discharge by carrier gas, realize point of mercury and chaff interferent From；Then mercury component is caught in the atmosphere of protection gas and is heated and discharges mercury again, is carried by protection gas as carrier gas into detector Device is detected；When surveying cadmium, sample to be tested feeding heating furnace is heated to design temperature by auto injection component, is removed in sample to be tested Moisture and organic matter；Then sample to be tested is transferred into high temperature cavity again, sample to be tested is carried out under the action of gas is protected Further heating, separates out cadmium, also has chaff interferent at this time and decomposes precipitation, carries cadmium as carrier gas by protection gas and chaff interferent passes through Cross and catch cadmium component, cadmium is absorbed, and chaff interferent takes away discharge by carrier gas, realizes the separation of cadmium and chaff interferent；Then in protection gas Catch cadmium component heating in atmosphere to discharge cadmium, bringing detecting instrument into by carrier gas is detected.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3865856A4 (en) * | 2019-10-29 | 2021-12-15 | Changsha Kaiyuan Hongsheng Technology Co., Ltd | Device and method for simultaneously measuring mercury, cadmium, zinc and lead |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338745A (en) * | 2010-07-15 | 2012-02-01 | 北京吉天仪器有限公司 | Electro-thermal vaporization atomic fluorescence spectrometry method and spectrometer used for determining cadmium |
| CN102967590A (en) * | 2012-11-13 | 2013-03-13 | 北京吉天仪器有限公司 | Direct sample introduction type method and instrument for simultaneously measuring mercury and cadmium |
| CN105738334A (en) * | 2016-02-03 | 2016-07-06 | 中华人民共和国舟山出入境检验检疫局 | Method for measuring mercury in marine products by combining solid-sample-feeding mercury measuring device and atomic fluorescence |
| CN106290201A (en) * | 2016-09-19 | 2017-01-04 | 长沙开元仪器股份有限公司 | A kind of survey hydrargyrum system and survey hydrargyrum method |
| CN207964636U (en) * | 2017-12-29 | 2018-10-12 | 北京博晖创新光电技术股份有限公司 | A kind of detecting system separately measuring mercury and cadmium |
-
2017
- 2017-12-29 CN CN201711484871.5A patent/CN108007911B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338745A (en) * | 2010-07-15 | 2012-02-01 | 北京吉天仪器有限公司 | Electro-thermal vaporization atomic fluorescence spectrometry method and spectrometer used for determining cadmium |
| CN102967590A (en) * | 2012-11-13 | 2013-03-13 | 北京吉天仪器有限公司 | Direct sample introduction type method and instrument for simultaneously measuring mercury and cadmium |
| CN105738334A (en) * | 2016-02-03 | 2016-07-06 | 中华人民共和国舟山出入境检验检疫局 | Method for measuring mercury in marine products by combining solid-sample-feeding mercury measuring device and atomic fluorescence |
| CN106290201A (en) * | 2016-09-19 | 2017-01-04 | 长沙开元仪器股份有限公司 | A kind of survey hydrargyrum system and survey hydrargyrum method |
| CN207964636U (en) * | 2017-12-29 | 2018-10-12 | 北京博晖创新光电技术股份有限公司 | A kind of detecting system separately measuring mercury and cadmium |
Non-Patent Citations (3)
| Title |
|---|
| 王金玉 等: "钨丝捕获-电热蒸发原子荧光光谱法直接测定饮料中痕量镉", vol. 34, no. 24, pages 131 - 134 * |
| 陈则玲: "金捕集冷原子吸收分光光度法测定海水中的汞" * |
| 陈则玲: "金捕集冷原子吸收分光光度法测定海水中的汞", 海洋环境科学, vol. 9, no. 01, pages 70 - 74 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3865856A4 (en) * | 2019-10-29 | 2021-12-15 | Changsha Kaiyuan Hongsheng Technology Co., Ltd | Device and method for simultaneously measuring mercury, cadmium, zinc and lead |
| JP2022508981A (en) * | 2019-10-29 | 2022-01-20 | チャンシャ カイユアン ホンション テクノロジー カンパニー リミテッド | Equipment and methods for simultaneous measurement of mercury, cadmium, zinc and lead |
| JP7224359B2 (en) | 2019-10-29 | 2023-02-17 | チャンシャ カイユアン ホンション テクノロジー カンパニー リミテッド | Apparatus and method for simultaneous measurement of mercury, cadmium, zinc and lead |
| US11754494B2 (en) | 2019-10-29 | 2023-09-12 | Changsha Kaiyuan Hongsheng Technology Co., Ltd | Device and method for simultaneously measuring mercury, cadmium, zinc and lead |
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